Ok, Willy Robion's alternative USB timing is available with release 2.4p1
Use --altUSB (note the spellling) in the command line. That's
double-dash altUSB.
I see no difference, but perhaps others will note better or worse
results. Please give feedback.
Paul Alfille
On 6/7/06, Paul Alfille <[EMA
OWFS has the ability to do the arcane recalculations for the faulty
batches of DS18S20 (after David Lissiuk noted the problem). That's why
the die number, trim blanket and all that are included.
Paul
On 6/7/06, David Lissiuk <[EMAIL PROTECTED]> wrote:
> Vincent & Daryl
>
>Concerning humidity
Vincent & Daryl
Concerning humidity sensors...
The HIH Series of sensors are low cost sensors, and perform better than
most similar sensors. However as high humidity ranges are reached
accuracy goes down. After exposure to high humidity they may exhibit
offset problems and need to be re-condi
Not at all off-topic.
I'm no expert, but the schematic is at
http://www.hobby-boards.com/catalog/links/hvac2-r1/HVAC%20Monitor%20v2.0%20Schematic.pdf
With 1M resitor and 1uF capacitor, the time constant is 1 second. What is the frequency of your AC? 60Hz?
Paul AlfilleOn 6/7/06, Jim Duda <[EMAIL
OK by me.
-Vince
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Paul Alfille
Sent: Wednesday, June 07, 2006
9:23 PM
To: owfs-developers@lists.sourceforge.net
Subject: Re: [Owfs-developers]
Error in Humidity calculation in ow_2438.c
Ok, applied.
I hav
Ok, applied.
I have do admit a was strongly tempted to groups the terms divided by VDD.
With your permission, you note will also appear in the source code.
Paul Alfille
On 6/7/06, Vincent Fleming <[EMAIL PROTECTED]> wrote:
OK, this is a nit, but it will make owfs a little
more ac
OK, this is a nit, but it will make owfs a little
more accurate (admittedly, it’s not very significant difference)…
The calculation given by Dallas for a DS2438/HIH-3610 combination is:
Sensor_RH = (VAD/VDD) -0.16 / 0.0062
And Honeywell gives the following:
VAD = VDD (0.0062
I apologize if this is off topic, since owfs seems to handle DS2450 just
fine, as best I can surmise.
I purchased a "HVAC Monitor Kit" from Hobby Boards. The description of
the board states that it can measure any voltage up to 28V AC or DC.
The design has a diode and a resistive voltage divid
AAG, Springbok, Hobbyboards.
My greatest experience is with the AAG stainless steel humidity probes.
They seem accurate (tested against a handheld humidity probe), and are
very hardy.
Paul AlfilleOn 6/7/06, Vincent Fleming <[EMAIL PROTECTED]> wrote:
Hi Darryl;
Thanks for respond
Hi Darryl;
Thanks for responding…
Indeed – my humidity readings are 10 to 15
points higher than actual, and the temp is also 2-5 deg C higher.
I wonder if it’s something in the
Hobby-boards design, or something inherent in the chipset?
You mention that you have other DS18S20
I have a hobby boards board also with the same chips. Between it and a bought humidity meter I routinely find 10% + difference in relative humidity readings.Also the board had an on board DS18S20 digital thermometer. It was at least 3 deg C higher than all my other DS18S20's.
So the question begs i
As you noted, all the USB specific code is on module/owlib/src/c/ow_ds9490.c
Look at function (line 257):
static int DS9490_setup_adapter(const struct parsedname * pn) {
Here is what Willy Robison suggested:
I pourchased the weather station parts from AAG, and had
a problem with everything unde
On Wed, 7 Jun 2006, Jan Kandziora wrote:
> Am Mittwoch, 7. Juni 2006 21:44 schrieb Paul Alfille:
>> Actually, I have some alternative timing settings suggested by William
>> Robison that we could try.
>>
>> It's been hard to justify changing anything until we had test networks that
>> could be com
We've gathered all the recent changes in a new release.
This incudes many configuration fixes by Christian Magnusson.
DS2482 i2c support, ftp (read only) support. Fake adapter support.
Paul Alfille
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Am Mittwoch, 7. Juni 2006 21:44 schrieb Paul Alfille:
> Actually, I have some alternative timing settings suggested by William
> Robison that we could try.
>
> It's been hard to justify changing anything until we had test networks that
> could be compared.
>
> I'll add it in, at least temporarily,
Actually, I have some alternative timing settings suggested by William Robison that we could try.
It's been hard to justify changing anything until we had test networks that could be compared.
I'll add it in, at least temporarily, add a command line flag, and package it up.
In the long run there
Am Mittwoch, 7. Juni 2006 19:30 schrieb Jan Kandziora:
>
> "Star" kind networks could be achieved with multiple host adapters, the
> DS2842-800
>
DS2482-800. Sorry.
Kind regards
Jan
--
Martians invade Earth after receiving intelligence that Bush was plotting
a Mission to Mars. Although
Am Mittwoch, 7. Juni 2006 17:48 schrieb Michael Weber:
> I am trying to change the timing settingss on a DS2490 adapter.
>
> The network consists of tens of Temperature sensors and some PIOs
> mainly, roughly 30 devices. It is very unstable and we are searching
> for solutions. One would be to adju
I am trying to change the timing settingss on a DS2490 adapter.
The network consists of tens of Temperature sensors and some PIOs
mainly, roughly 30 devices. It is very unstable and we are searching
for solutions. One would be to adjust the timing (and check if the
timings are correct as the
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